var u=document.location.href;
var len=u.length;
var pos_inter=u.lastIndexOf("intersud.fr");
pos_inter+=11;
var part1=u.substring(0,pos_inter);
var part2=u.substring(pos_inter,len);
var u_en=part1+"/EN"+part2;

$(document).ready(function() {
	$('.lien_en').attr('href',u_en);
	$('.lien_fr').attr('href',u);
});